Most recently, the proposed sale of Grace Baptist Church in Nanuet to a New Hempstead-based girls school spurred the formation of a CUPON chapter, with hundreds attending an inaugural meeting held in January at Nanuet High School.

Neighbors’ concerns have centered around potential traffic and overcrowding from the addition of a 450-student school so close to the public school campus. But the fact that the applicant is a yeshiva with a spotty compliance record has been seized upon by some opponents.

The CUPON of the Nyacks was formed late last year on the heels of a slew of proposals that could add more than 450 new housing units in the coming years.

Co-founder Mark Dery said the impact of the 135-unit Pavion Apartments at Cedar Hill Avenue at Franklin Street and criticism of its approval process was among his chapter’s chief concerns.

Spring Valley residents formed a CUPON chapter a year ago to monitor land-use boards and the Board of Trustees.

“Our goal is the same as other CUPONS,” said Steve White, an activist who heads the village chapter. “We have helped people to be more aware of what is happening. We have documented the actions of the boards and communicated our observations to state level officials and the news media.”

White said the village chapter has an added twist, given the rental population of Spring Valley.

“Unlike other CUPONs, we also have addressed issues that affect renters, including attending Rent Stabilization Board hearings,” he said.